/* Theme v1 - design tokens + components dùng chung */
:root{
  --bg:#0f172a; --surface:#1e293b; --surface-2:#334155; --border:#334155;
  --primary:#38bdf8; --primary-dark:#0ea5e9; --accent:#3b82f6;
  --success:#34d399; --warn:#f59e0b; --danger:#ef4444;
  --text:#e2e8f0; --muted:#94a3b8;
  --radius:10px; --radius-sm:6px;
  --shadow:0 4px 6px rgba(0,0,0,.3);
  --font:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;
}
*{box-sizing:border-box}
body{font-family:var(--font);background:var(--bg);color:var(--text);margin:0;padding:10px;overflow-x:hidden}
/* ===== Header ===== */
.site-header{max-width:1400px;margin:0 auto 14px;display:flex;align-items:center;gap:12px;background:var(--surface);border-radius:var(--radius);padding:10px 16px;box-shadow:var(--shadow);position:sticky;top:8px;z-index:20}
.brand{color:var(--primary);font-weight:800;font-size:18px;white-space:nowrap;text-decoration:none}
.brand small{display:block;color:var(--muted);font-size:10px;font-weight:400}
.search-box{flex:1;display:flex;gap:8px}
.search-box input{flex:1;padding:10px 14px;background:var(--bg);border:1px solid #475569;color:#fff;border-radius:20px;font-size:13px}
.search-box input:focus{outline:none;border-color:var(--primary)}
.hbtn{background:var(--surface-2);color:var(--text);border:1px solid #475569;padding:9px 14px;border-radius:20px;cursor:pointer;font-size:13px;font-weight:600;white-space:nowrap}
.hbtn:hover{border-color:var(--primary);color:var(--primary)}
.hbtn.on{background:var(--accent);border-color:var(--accent);color:#fff}
/* ===== Layout ===== */
.container{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:320px 1fr;gap:20px}
.sidebar{background:var(--surface);padding:15px;border-radius:var(--radius);height:88vh;display:flex;flex-direction:column;overflow:hidden;min-width:0}
.channel-list{flex-grow:1;overflow-y:auto;margin-top:10px;padding-right:4px}
.category-title{font-size:12px;text-transform:uppercase;color:var(--primary);margin:15px 0 5px 5px;font-weight:bold;letter-spacing:.5px}
.channel-item{padding:10px 12px;margin-bottom:6px;background:var(--surface-2);border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;transition:.2s;border:1px solid transparent}
.channel-item:hover,.channel-item.active{background:var(--accent);color:#fff}
.channel-item img{height:22px;width:22px;object-fit:contain;margin-right:10px;border-radius:4px;background:#fff;padding:2px;flex-shrink:0}
.channel-item .nm{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.fav-star{background:none;border:0;cursor:pointer;font-size:15px;color:var(--muted);padding:0 2px}
.fav-star.faved{color:#facc15}
.view-badge{font-size:10px;background:rgba(0,0,0,.35);border-radius:10px;padding:2px 7px;margin-left:6px;white-space:nowrap}
.live-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--danger);margin-right:4px;animation:blink 1.2s infinite}
@keyframes blink{50%{opacity:.3}}
.main-content{display:flex;flex-direction:column;gap:14px;min-width:0}
/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#0c4a6e,#1e3a8a);border-radius:var(--radius);padding:18px 20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow)}
.hero img{width:64px;height:64px;object-fit:contain;background:#fff;border-radius:12px;padding:6px}
.hero .t{flex:1}.hero .t b{font-size:19px}.hero .t div{color:#bae6fd;font-size:12px;margin-top:3px}
.hero button{border:0;border-radius:24px;padding:11px 22px;font-weight:800;cursor:pointer;font-size:14px}
.btn-watch{background:#fff;color:#0c4a6e}.btn-fav{background:rgba(255,255,255,.15);color:#fff;margin-left:8px}
/* ===== Player ===== */
.video-box{background:var(--surface);padding:15px;border-radius:var(--radius);position:relative;box-shadow:var(--shadow);min-width:0;overflow:hidden}
/* Fullscreen cả khung: video phủ đầy, ticker/QR (con của .video-box) đi theo */
.video-box:fullscreen{padding:0;border-radius:0;background:#000;display:flex;align-items:center;justify-content:center}
.video-box:fullscreen video{max-height:100vh;aspect-ratio:auto;width:100%;height:100%}
video{width:100%;max-width:100%;border-radius:6px;background:#000;aspect-ratio:16/9;display:block;object-fit:contain;max-height:72vh;margin:0 auto}
.watermark{position:absolute;top:25px;right:25px;max-height:45px;opacity:.85;pointer-events:none}
.unmute-banner{position:absolute;bottom:25px;left:50%;transform:translateX(-50%);background:rgba(15,23,42,.9);border:1px solid var(--primary);color:var(--primary);padding:8px 16px;border-radius:20px;font-size:13px;cursor:pointer;display:none;z-index:10;box-shadow:0 4px 10px rgba(0,0,0,.5);white-space:nowrap}
.unmute-banner:hover{background:var(--primary);color:var(--bg)}
.meta-row{display:flex;align-items:center;gap:10px;margin-top:10px;flex-wrap:wrap}
.meta-row .views{font-size:12px;color:var(--muted)}
.abtn{background:var(--surface-2);color:var(--text);border:1px solid #475569;padding:7px 13px;border-radius:16px;cursor:pointer;font-size:12px;font-weight:600}
.abtn:hover{border-color:var(--primary);color:var(--primary)}
/* theater mode */
body.theater .container{grid-template-columns:1fr;max-width:1100px}
body.theater .sidebar{display:none}
/* ===== Chip danh mục ===== */
.chip-row{max-width:1400px;margin:0 auto 12px;display:flex;gap:8px;overflow-x:auto;padding:2px 2px 8px;position:sticky;top:0;z-index:15}
.chip{flex:0 0 auto;background:var(--surface);border:1px solid #475569;color:var(--text);border-radius:18px;padding:8px 16px;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap}
.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}
/* ===== Rails / EPG ===== */
.rail{background:var(--surface);border-radius:var(--radius);padding:14px 16px}
.rail h3{margin:0 0 10px;font-size:14px;color:var(--primary)}
.rail-row{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px}
.rail-card{min-width:150px;background:var(--surface-2);border-radius:8px;padding:10px;cursor:pointer;text-align:center;border:1px solid transparent}
.rail-card:hover{border-color:var(--primary)}
.rail-card img{width:40px;height:40px;object-fit:contain;background:#fff;border-radius:8px;padding:4px}
.rail-card div{font-size:12px;margin-top:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.epg-table{width:100%;border-collapse:collapse;font-size:13px}
.epg-table td,.epg-table th{padding:9px 10px;border-bottom:1px solid var(--border);text-align:left}
.epg-now{color:var(--success);font-weight:700}
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:#065f46;color:#a7f3d0;padding:11px 22px;border-radius:24px;font-size:13px;z-index:99;display:none;box-shadow:var(--shadow)}
.skel{background:linear-gradient(90deg,var(--surface-2) 25%,#475569 50%,var(--surface-2) 75%);background-size:200% 100%;animation:sk 1.2s infinite;border-radius:6px}
@keyframes sk{to{background-position:-200% 0}}
@media (max-width:900px){
  body{padding:5px}.container{grid-template-columns:1fr;gap:12px}
  .sidebar{height:auto;max-height:62vh;order:2}.watermark{max-height:30px;top:20px;right:20px}
  .site-header{flex-wrap:wrap;position:static;padding:8px 12px}
  .brand{font-size:16px}.brand small{display:none}
  .search-box{order:3;flex-basis:100%}
  .hero{padding:12px 14px;gap:12px}.hero img{width:44px;height:44px}.hero .t b{font-size:16px}
  .hero button{padding:9px 14px;font-size:13px}.btn-fav{display:none}
  .video-box{position:sticky;top:0;z-index:18;padding:10px}
  video{max-height:38vh}
  .channel-item{padding:13px 12px;margin-bottom:8px}
  .channel-item img{height:30px;width:30px}
  .channel-item .nm{font-size:14px !important}
  .fav-star{font-size:19px;padding:0 6px}
  .meta-row{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .abtn{flex:0 0 auto}
  .rail{padding:12px}
}